Problem when I try to build (Module build failed: TypeError: css.eachInside is not a function)

[cpfarher]

It arise a problem when try to build webpack:

ERROR in .//css-loader?{"minimize":true}!.//postcss-loader/lib?{"sourceMap":true}!.//resolve-url-loader!.//sass-loader/lib/loader.js?{"sourceMap":true}!./~/vue2-perfect-scrollbar/dist/vue2-perfect-scrollbar.min.css
Module build failed: TypeError: css.eachInside is not a function
at /node_modules/postcss-discard-comments/index.js:30:13
at LazyResult.run /node_modules/postcss-loader/node_modules/postcss/lib/lazy-result.js:270:20)
at LazyResult.asyncTick (/node_modules/postcss-loader/node_modules/postcss/lib/lazy-result.js:185:32)
at LazyResult.asyncTick (/node_modules/postcss-loader/node_modules/postcss/lib/lazy-result.js:197:22)
at /postcss-loader/node_modules/postcss/lib/lazy-result.js:190:27
at

[mercs600]

@cpfarher could you reproduce it and share repository ?